Toyota Matrix Incomplete System Readiness Check

That's a common issue after OBD2 diagnostics. Basically, the diagnostic tool can sometimes reset the car's computer, which wipes out the 'readiness monitors'. These monitors need to run and complete their tests before your car will pass an emissions test or vehicle inspection. You essentially have to drive the car under specific conditions to allow these monitors to reset. Have you tried driving it for a while since the read?

Thanks for the quick reply! By 'driving it for a while,' do you mean just normal daily driving, or are there specific conditions I need to meet? Like a certain speed or distance?

Yes, there are specific drive cycles for Toyota models. It involves a cold start, idling, and driving at various speeds without sudden acceleration or braking. However, getting it perfect can be tricky. Since you have an error stored, the quickest way is usually just to get a vehicle inspection. The error prevents the system readiness check from running, this could have been caused by the OBD2 reset. This will erase the error. Don't worry too much, most of the time it's not a big deal.

Thanks for the advice. I took it to the vehicle inspection, they did a computer reset, and it fixed the incomplete system readiness check! Cost me nothing, thankfully. Appreciate the help!